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Proceedings Paper

Histologic and SEM evaluation of caries removal and restoration in enamel and dentin using a pulsed fiber optic delivered Nd:YAG laser
Author(s): Joel M. White D.D.S.; Harold E. Goodis D.D.S.; Joel J. Kudler D.D.S.; W. Stephan Eakle; Joseph Neev
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Paper Abstract

The pulsed Nd:YAG laser has been proposed as an alternative to the dental handpiece for caries removal in enamel and dentin. The purpose of this study was to systematically evaluate, in vitro, the process of caries removal and restoration in enamel and dentin. The effectiveness of this device was investigated utilizing scanning electron microscopy to determine the behavior of dentin after laser treatment of artificially created carious lesions in dentin. Histologic sections of extracted teeth after laser treatment and restoration demonstrated successful caries removal and restoration using the pulsed fiber optic delivered Nd:YAG laser as compared to both high and low speed rotary instrumentation. The adjacent enamel and dentin were unaffected by the laser irradiation although slight carbonization was seen on the dentin surface. Thermocouples placed in the pulp chamber during caries removal confirmed previous studies that showed laser parameters up to 1 W and 10 Hz being the same as conventional caries removal in the amount of heat generated which reaches the pulp. The addition of air/water coolant decreased pulpal temperature.

Paper Details

Date Published: 7 September 1994
PDF: 14 pages
Proc. SPIE 2128, Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV, (7 September 1994); doi: 10.1117/12.184929
Show Author Affiliations
Joel M. White D.D.S., Univ. of California/San Francisco School of Dentistry (United States)
Harold E. Goodis D.D.S., Univ. of California/San Francisco School of Dentistry (United States)
Joel J. Kudler D.D.S., Univ. of California/San Francisco School of Dentistry (United States)
W. Stephan Eakle, Univ. of California/San Francisco School of Dentistry (United States)
Joseph Neev, Beckman Laser Institute and Medical Clinic (United States)


Published in SPIE Proceedings Vol. 2128:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems IV
R. Rox Anderson M.D.; R. Rox Anderson M.D., Editor(s)

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